This product is a PDF that contains links to files that consist of PowerPoint slides synchronized with the audio-recording of the speaker (recorded presentation), PDF files of the slides, and audio only (mp3) as noted.

This session will focus on Heat Pump operation in low-ambient conditions as well as improved controls to accommodate the increase in ventilation air in this era of energy conservation. The operation of Heat Pump systems in low ambient outdoor conditions regularly requires heavy reliance on the electric resistance heat installed in the system. This paper will cover alternate system design to alleviate this resistance heat demand. ASHRAE Standard 62.1 requires elevated outdoor air levels, hese control strategies will show energy conservation measures available that will satisfy these requirements.

Low Outdoor Temperature Heat Pump Applications to Reduce Electric Resistance Heat (CH-12-C079)
John Bush, Associate Member, Ronald Domitrovic, Ph.D., Associate Member, Ammi Amarnath
This product contains: Recorded Presentation Audio (mp3) Slides (pdf)

Advanced Unitary HVAC Control Sequence (CH-12-C080)
Reid Hart, P.E., Member
This product contains: Slides (pdf) Recorded Presentation Audio (mp3)